package com.ykh.spring.pojo.dao;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: YKH
 * Date: 2022-08-25
 * Time: 21:28
 */
public interface BookDao {
    Integer getPriceByBookId(Integer bookId);

    void updateStock(Integer bookId);

    void updateBalance(Integer userId, Integer price);
}
